Having a solid character designs is extremely beneficial. A unique character design means your brand will be recognisable, however it is also important to avoid over glamorizing to make sure the character is still relatable.
Many restaurant chains use good character design to attract customers. Their designs are friendly. Both of the characters below are smiling look approachable. The creators stick to a small color palette to not overcomplicate the design and make it easily recognisable even from a far.